✅Included: Lab Centrifuge Tube Rack 60 Test Tube Holes No Wire White Color Holds 60 Tubes. ✅Premium Quality: Test tubes are made of sturdy plastic, non-toxic and eco-friendly. ✅Designed for use in professional laboratories, but is an ideal choice for science classrooms and household use. ✅If you need custom order with different sizes/design please contact King Mariot Storefront on . ✅Safely Packaged to avoid being damaged during transportation.